[tex] \frac{1}{ \sqrt{3} } \times ( \frac{4}{ \sqrt{3} } \times x - \sqrt{7} ) = x \\ \frac{4x }{ \sqrt{3} } - \sqrt{7} = \sqrt{3x} \\ \frac{4 \sqrt{3x} }{3} - \sqrt{7} = \sqrt{3x} \\ 4 \sqrt{3x} - 3 \sqrt{7} = 3 \sqrt{3} x \\ 4 \sqrt{3x} - 3 \sqrt{3x} = 3 \sqrt{7} \\ \sqrt{3x} = 3 \sqrt{7} \\ x = \frac{3 \sqrt{7} }{ \sqrt{3} } \\ x = \sqrt{21} \\ x = 4.58[/tex]
Sper că te-am ajutat!
